Final answer:
The correct answer is option b. The volume of a rectangular prism with the provided dimensions is calculated using the formula V = length × width × height, which results in a volume of 80 cubic feet.
Step-by-step explanation:
To find the volume of a rectangular prism, you multiply the length, width, and height of the prism. Given the base length = 8 ft, base width = 5 ft, and height = 2 ft, we use the formula for the volume of a rectangular prism:
V = length × width × height
V = 8 ft × 5 ft × 2 ft
V = 40 ft × 2 ft
V = 80 ft³
Therefore, the correct option is b. 80 ft³.